div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Triangulos src=https:reader035fdocumentocomreader035viewer202207181655aa62a81a28ab96108b468dhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpTRIANGULOSpdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: Triangulos src=https:reader035fdocumentocomreader035viewer202207181655aa62a81a28ab96108b468dhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divpCLASES DE TRIANGULOpdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: Triangulos src=https:reader035fdocumentocomreader035viewer202207181655aa62a81a28ab96108b468dhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divpPROPIEDADESLa suma de los ángulos interiores es igual a 180ºpdiv